The reason you CPU is only @ 2.4 ghz is b/c you have speed stepping(or w/e its called) turned on in the BIOS. What it does is lowers the multiplier to 6 when the CPU is not under load. WHen under load, it'll up the multi to the overclock speed u had it at, which would be 9 in your case (since 9 X bus speed of 400 would be 3600mhz). If you want your CPU to run @ 3.6 ghz all the time, turn it off in the BIOS advance settings i think. I personally leave it on to conserve energy and reduce the wear on my CPU. But it you're in for an evening of benchmark records and hardcore gaming, make sure its turned off for max performance! My CPU as OCed to 3.4 ghz as well but runs nominally @ 2.5 Ghz, slightly higher than yours due to the higher FSB.
As for OCing your GPU, I find that you need 3 essential pieces of software: GPU-Z the GPU equivalent of CPU-Z, ATI tool, a program that lets you check for graphical artifacts that ironically works for ATI cards, and Rivatuner, a program where you do the actually OCing.
Why would you need a separate program to OC when your GPU prolly already comes w/ one? Simple. Those built in programs limit the amount you can OC and thus you can never push your GPU to the max. With Rivatuner, that isn't an issue. For more info, you best browse google and look for a thread that deals w. GPU overclocks.
Oh yeah, I got the 9800gtx+ for $150 CDN! Mine was modestly OCed out of the box though.Edited by the_silencer - 2/4/09 at 8:26pm